(D-9)y 3e" +x-sin 4x. 3 1 A. y C,e*+C,e* +e* +÷x- sin 4x 25 -3x 8 3 1 B. y Ce* +C,e-* +e* -x- sin 4x В. -3x - - 8. 25 3 C. y=Ce* +C,e* 1 sin 4x 25 С. et 8. - y = C,e* +C,e* 3 et 8. 1 sin 4x 25 -3x - 9. 11911a119 119

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Q: 2, 3π cot²( -B) if sin 2ẞ 4 5

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